CVE-2026-123811
Dynatrace MCP Server: Unauthenticated HTTP MCP Tool Invocation in `@dynatrace-oss/dynatrace-mcp-server`
Dynatrace MCP Server is an MCP server for Dynatrace Observability. Prior to 2.0.0, a server started with the --http option accepts JSON-RPC tools/call requests without authentication, session validation, or Host and Origin protections before dispatching them under the server's configured Dynatrace credentials. A network-reachable caller can invoke execute_dql to read logs, security events, user sessions, and other Grail data, or invoke create_dynatrace_notebook to create tenant-visible notebooks. The send_event path is not affected because its requestHumanApproval gate blocks this attack path, and reset_grail_budget only demonstrates dispatch without accessing Dynatrace data. This issue is fixed in version 2.0.0.
Fixes and workarounds
Fix
@dynatrace-oss/dynatrace-mcp-server (npm): OSV reports a fixed version 2.0.0. Check the advisory for supported release branches.
Source: OSV GHSA-p7w7-4929-vpj5Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| dynatrace-mcp dynatrace-oss |
< 2.0.0 (affected) | CNA: GitHub_M |
@dynatrace-oss/dynatrace-mcp-server@dynatrace-oss/dynatrace-mcp-server
npm |
≥ 0; < 2.0.0 (affected, semver); OSV events: introduced 0; fixed 2.0.0Source events (semver)Other versions: unaffected |
OSV GHSA-p7w7-4929-vpj5 |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L | CNA: GitHub_M |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/dynatrace-oss/dynatrace-mcp/security/advisories/GHSA-p7w7-4929-vpj5CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/dynatrace-oss/dynatrace-mcp/commit/8f12972481e9165e8bd24d63b0a9e71976f85a43CNA: GitHub_M · x_refsource_MISC
- https://github.com/dynatrace-oss/dynatrace-mcp/commit/ac5251edfcf9511c6c662414da743383e7d1451cCNA: GitHub_M · x_refsource_MISC
- https://github.com/dynatrace-oss/dynatrace-mcp/commit/ead820322238633f5b289778c57faf5d3a8d73f9CNA: GitHub_M · x_refsource_MISC
- https://github.com/dynatrace-oss/dynatrace-mcp/releases/tag/v2.0.0CNA: GitHub_M · x_refsource_MISC
- https://github.com/advisories/GHSA-p7w7-4929-vpj5OSV / GitHub Security Advisories · advisory
- https://osv.dev/vulnerability/GHSA-p7w7-4929-vpj5OSV / GitHub Security Advisories · osv
For agents and automation
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